<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div class="box">box1</div>
    <div id="app">
        <p>hello node！</p>
        <img src="../img/logo.png" alt="" />
        <!-- 这是一个注释 -->
        <h1>标题h1</h1>
        hello world!
    </div>
    <div class="box">box2</div>
</body>
<script src="../js/elementNode.js"></script>

</html>